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Python EUVDEUVD-2026-29099

| CVE-2026-31252 MEDIUM
Code Injection (CWE-94)
2026-05-11 mitre GHSA-4xxc-9mf8-p66h
5.7
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.7 MEDIUM
AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

3
CVSS changed
May 12, 2026 - 20:22 NVD
5.7 (MEDIUM)
CVE Published
May 11, 2026 - 00:00 nvd
UNKNOWN (no severity yet)
CVE Published
May 11, 2026 - 00:00 nvd
MEDIUM 5.7

DescriptionCVE.org

CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading component. The framework uses torch.load() to load model weight files (e.g., llm.pt, flow.pt, hift.pt) without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing a malicious model directory containing specially crafted model files. When a victim starts the CosyVoice Web UI pointing to this directory, arbitrary code is executed on the victim's system during the model loading process.

Analysis

CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading component. The framework uses torch.load() to load model weight files (e.g., llm.pt, flow.pt, hift.pt) without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing a malicious model directory containing specially crafted model files. When a victim starts the CosyVoice Web UI pointing to this directory, arbitrary code is executed on the victim's system during the model loading process.

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EUVD-2026-29099 vulnerability details – vuln.today

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